I am designing an app icon for an industry-specific business app that does primarily job management. The name is very likely to be called "JobCheck", which may become a part of a collection, or suite, of apps (ie., FinancialCheck, EquipmentCheck, etc.).
I am aware of the overuse of the checkmark symbol, and would very much like to get away from it. However, with the word "check" as part of the app name, there seems to be this expectation that the checkmark would be part of the icon. It's just very difficult to come up with something unique with it.
I have tried to come up with a few rough ideas and I was wondering if I can get some feedback on them. The company I work for already has its own company logo and colour scheme (orange and grey). I'm trying to go for the "flat" look for I feel like something is missing. Please please let me know how I could possibly improve on them.